/*
 * Copyright (C) 2006-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */

package org.alfresco.jlan.util;

import java.io.IOException;

/**
 * Console IO Class
 *
 * <p>Provides a wrapper class for conole I/O functions to allow Java and J#/.NET versions.
 *
 * @author gkspencer
 */
public class ConsoleIO {

  /**
   * Check if the console input is connected to a valid stream
   *
   * @return boolean
   */
  public final static boolean isValid() {
    try {
      System.in.available();
      return true;
    }
    catch (IOException ex) {
    }
    return false;
  }

  /**
   * Check if there is input available
   *
   * @return int
   */
  public final static int available() {
    try {
      return System.in.available();
    }
    catch (Exception ex) {
    }
    return -1;
  }

  /**
   * Read a character from the console
   *
   * @return int
   */
  public final static int readCharacter() {
    try {
      return System.in.read();
    }
    catch (Exception ex) {
    }
    return -1;
  }
}
